Sure! Here is a list of 100 short-tail, long-tail keywords, and relevant questions related to lawn mowers:

Short-Tail Keywords:
1. Lawn mower
2. Best lawn mower
3. Electric lawn mower
4. Gas-powered lawn mower
5. Cordless lawn mower
6. Robotic lawn mower
7. Push lawn mower
8. Riding lawn mower
9. Self-propelled lawn mower
10. Mulching lawn mower
11. Commercial lawn mowers
12. Residential lawn mowers
13. Cheap lawn mowers
14. High-performance lawn mower
15. Eco-friendly lawn mower
16. Lightweight lawn mower
17. Reel lawn mower
18. Zero-turn lawn mower
19. Battery-powered lawn mower
20. Handheld lawn mower

Long-Tail Keywords:
1. Benefits of using an electric lawn mower
2. How to choose the right gas-powered lawn mower
3. Pros and cons of cordless lawn mowers
4. Are robotic lawn mowers worth the investment?
5. Beginner’s guide to using a push lawn mower
6. Maintenance tips for riding lawn mowers
7. Self-propelled vs. manual lawn mowers: Which is better?
8. Mulching vs. bagging: Which lawn mower is suitable?
9. Commercial-grade lawn mowers for professional landscapers
10. How to find the best deals on residential lawn mowers
11. Tips for maintaining a cheap lawn mower
12. What to consider when buying a high-performance lawn mower
13. Are eco-friendly lawn mowers effective in large yards?
14. Advantages of lightweight lawn mowers for seniors
15. How to properly mow your lawn with a reel lawn mower
16. Zero-turn lawn mower buying guide for large properties
17. How long does the battery last in a battery-powered lawn mower?
18. What sizes do handheld lawn mowers come in?
19. Features to look for in a reliable lawn mower engine
20. Different types of blades for a precise lawn mowing experience

Relevant Questions:
1. What is the average lifespan of a lawn mower?
2. Can I use an electric lawn mower on wet grass?
3. How often should I sharpen the blades of my lawn mower?
4. Are riding lawn mowers suitable for hilly terrains?
5. What safety precautions should I follow while operating a lawn mower?
6. Can I use a mulching lawn mower for leaf removal?
7. How loud are gas-powered lawn mowers compared to electric models?
8. Are there any specific maintenance tasks for robotic lawn mowers?
9. Can I convert a push lawn mower into a self-propelled one?
10. Are there any eco-friendly alternatives to traditional lawn mowers?
11. How do I adjust the cutting height of my lawn mower?
12. What is the ideal grass length for mowing?
13. How long does it typically take to mow an average-sized lawn?
14. What should I do if my lawn mower won’t start?
15. Can I use a lawn mower to trim bushes and shrubs?

Remember, this is just a brainstormed list, and depending on your specific requirements, you may need to further refine or prioritize these keywords.